Posted by John T Country Lawyer on October 19, 2007 at 06:33:51 from (66.244.83.147):
In Reply to: Re: Ignition coil posted by KEB on October 18, 2007 at 21:17:40:
Keith, I know youre an electrical kinda guy and like you (see my reply to Walt below) Ive never seen or used any coils that had either winding connected to the outer metallic case, although Ive heard tell (may be an old wives tale lol) some were made that way. The way I explain the condesnor action to lay people is that if theres no capacitance at all (or its sized way too small) she will still fire BUT A WEAKER SPARK and the points will burn up rapidly. If theres too much capacitance she wont fire at all, but hey the points wont burn up lol. Its just that right size of condensor that allows a higher energy spark plus extends points life thats needed (an engineering balance trade off). I explain to people it sort of controls the rate of stored energy discharge from the coils primary so the maximum energy gets inductively coupled over to the high voltage secondary versus it getting wasted as heat.
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